Appearance:

Large shearwater with distinct, marked, dark cap and white collar. Blotched belly and underwings. White upper tail-coverts forms a horseshoe mark, but note that Cory's Shearwater may show the same. Dark patch at side of neck. Bill dark. Flight action powerful, with alternating glides and rapid bursts of beats with stiff wings. Seldom soars.

Sound:

Calls at breeding ground a deep, soft, moaning "oooh-aahh" ("surprised or shocked old lady"). Tone fairly clear, and pitch rising and falling.

Distribution:

Wikipedia: map (se also Xeno-canto below)

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

CC

Appearance:

Adult breeding birds unmistakable. White mask, warm rufous brown throat and underparts. Bill noticeably heavier than in Red-necked Phalarope in all plumages and and ages. Female more brightly coloured than male (reversed dimorphism). 1st winter birds differs from Red-necked in white fore-crown, while fresh juveniles have less contrasting markings on back. Both mentioned characters are often difficult, or impossible to use at a distance. With experience and practise, one can use the powerful flight and more stocky build as field marks.

Sound:

Flight-call a short and sharp, Coot-like "kit". Cleaner and higher pitched than Red-necked Phalarope. Display sound a rolling cooing, at stable pitch. Other calls: a hissing like the squeezing of a rubber duck, rising quickly in pitch and ending abruptly.

Contact calls:

Distribution:

Wikipedia: map (se also Xeno-canto below)

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

CC

CC-sounds,www.xeno-canto.org,Frank Lambert,http://creativecommons.org/licenses/by-nc-nd/4.0/